Before, you consider gamesharing on PlayStation 4, it is against the ToS of SEN will result in suspension or banned, well you know all about that so, Let's get started.

1. Deactivated your ps4 as your primary (Person has to activate your account as primary on their PS4).
2. Person signs on your accounts for about 5 minutes to download what he needs and activate your account as primary on their system.
3. For the other dude want to get the dlc he wants he must deactivate his account as primary.

PSN/Account Management>Activate Ps4 as primary, choose either if your deactivating or activating.

Warning: If you gamesharing and if you play without internet don't gameshare because you only got your DLC when your online not offline do to your account no being activated as primary so, don't freak out and called psn then will end up in more deep crap for breaking the ToS.